This week’s new questions
Why can some people see further - does visual acuity vary between human peoples? And why do we feel tired after a large meal?
Regulars
Advertisement
Why can some people see further - does visual acuity vary between human peoples? And why do we feel tired after a large meal?
One reader wants to know how far through the galaxy they have travelled in their 66 years of life. And to win the lottery, which gives better odds: buying one ticket a week or 52 tickets once a year?